Finding the Fourth Proportional to 12,897.45, 19,389.92 and 10,298.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,897.45 : 19,389.92 = 10,298.16 : x
2. Step 2: Convert to fraction form
   12,897.45/19,389.92 = 10,298.16/x
3. Step 3: Cross multiply
   12,897.45x = 19,389.92 × 10,298.16
4. Step 4: Simplify right side
   12,897.45x = 199,680,498.55
5. Step 5: Solve for x
   x = 199,680,498.55/12,897.45
6. Step 6: Final answer
   x = 15,482.17